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9c35a8 |
From d1b516014e4883f30ee2faf264dd89a6d7940e2c Mon Sep 17 00:00:00 2001
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From: Phil Sutter <phil@nwl.cc>
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Date: Sat, 3 Oct 2020 17:46:09 +0200
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9c35a8 |
Subject: [PATCH] nft: Make batch_add_chain() return the added batch object
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9c35a8 |
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9c35a8 |
Do this so in a later patch the 'skip' field can be adjusted.
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9c35a8 |
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9c35a8 |
While being at it, simplify a few callers and eliminate the need for a
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9c35a8 |
'ret' variable.
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9c35a8 |
Signed-off-by: Phil Sutter <phil@nwl.cc>
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Reviewed-by: Florian Westphal <fw@strlen.de>
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(cherry picked from commit 0d77e64e8d9b8a3984b01a4951524dc40f61f4b6)
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9c35a8 |
Conflicts:
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9c35a8 |
iptables/nft.c
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9c35a8 |
-> Upstream changed good/bad return codes of nft_chain_restore()
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function.
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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9c35a8 |
---
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iptables/nft.c | 35 +++++++++++++++++------------------
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9c35a8 |
1 file changed, 17 insertions(+), 18 deletions(-)
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diff --git a/iptables/nft.c b/iptables/nft.c
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index e95e99f1d8d71..0efd18d57320f 100644
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--- a/iptables/nft.c
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+++ b/iptables/nft.c
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@@ -398,10 +398,11 @@ batch_set_add(struct nft_handle *h, enum obj_update_type type,
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return batch_add(h, type, s);
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}
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-static int batch_chain_add(struct nft_handle *h, enum obj_update_type type,
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+static struct obj_update *
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+batch_chain_add(struct nft_handle *h, enum obj_update_type type,
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struct nftnl_chain *c)
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{
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- return batch_add(h, type, c) ? 0 : -1;
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+ return batch_add(h, type, c);
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}
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static struct obj_update *
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@@ -910,7 +911,6 @@ int nft_chain_set(struct nft_handle *h, const char *table,
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const struct xt_counters *counters)
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{
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struct nftnl_chain *c = NULL;
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- int ret;
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nft_fn = nft_chain_set;
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@@ -924,10 +924,11 @@ int nft_chain_set(struct nft_handle *h, const char *table,
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if (c == NULL)
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return 0;
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- ret = batch_chain_add(h, NFT_COMPAT_CHAIN_UPDATE, c);
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+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_UPDATE, c))
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+ return 0;
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/* the core expects 1 for success and 0 for error */
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- return ret == 0 ? 1 : 0;
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+ return 1;
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}
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static int __add_match(struct nftnl_expr *e, struct xt_entry_match *m)
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@@ -1734,7 +1735,6 @@ int nft_chain_user_add(struct nft_handle *h, const char *chain, const char *tabl
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{
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struct nftnl_chain_list *list;
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struct nftnl_chain *c;
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- int ret;
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nft_fn = nft_chain_user_add;
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@@ -1754,14 +1754,15 @@ int nft_chain_user_add(struct nft_handle *h, const char *chain, const char *tabl
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if (h->family == NFPROTO_BRIDGE)
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nftnl_chain_set_u32(c, NFTNL_CHAIN_POLICY, NF_ACCEPT);
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- ret = batch_chain_add(h, NFT_COMPAT_CHAIN_USER_ADD, c);
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+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_USER_ADD, c))
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+ return 0;
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list = nft_chain_list_get(h, table, chain);
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if (list)
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nftnl_chain_list_add(c, list);
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/* the core expects 1 for success and 0 for error */
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- return ret == 0 ? 1 : 0;
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+ return 1;
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}
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int nft_chain_restore(struct nft_handle *h, const char *chain, const char *table)
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@@ -1769,7 +1770,6 @@ int nft_chain_restore(struct nft_handle *h, const char *chain, const char *table
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
struct nftnl_chain_list *list;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
struct nftnl_chain *c;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
bool created = false;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- int ret;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
c = nft_chain_find(h, table, chain);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
if (c) {
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -1794,13 +1794,14 @@ int nft_chain_restore(struct nft_handle *h, const char *chain, const char *table
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
if (!created)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
return 0;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- ret = batch_chain_add(h, NFT_COMPAT_CHAIN_USER_ADD, c);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_USER_ADD, c))
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ return -1;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
list = nft_chain_list_get(h, table, chain);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
if (list)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_list_add(c, list);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- return ret;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ return 0;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
}
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
/* From linux/netlink.h */
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -1818,7 +1819,6 @@ static int __nft_chain_user_del(struct nftnl_chain *c, void *data)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
{
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
struct chain_user_del_data *d = data;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
struct nft_handle *h = d->handle;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- int ret;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
/* don't delete built-in chain */
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
if (nft_chain_builtin(c))
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -1834,8 +1834,7 @@ static int __nft_chain_user_del(struct nftnl_chain *c, void *data)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
/* XXX This triggers a fast lookup from the kernel. */
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_unset(c, NFTNL_CHAIN_HANDLE);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- ret = batch_chain_add(h, NFT_COMPAT_CHAIN_USER_DEL, c);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- if (ret)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_USER_DEL, c))
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
return -1;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_list_del(c);
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -1910,7 +1909,6 @@ int nft_chain_user_rename(struct nft_handle *h,const char *chain,
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
{
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
struct nftnl_chain *c;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
uint64_t handle;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- int ret;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nft_fn = nft_chain_user_rename;
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -1941,10 +1939,11 @@ int nft_chain_user_rename(struct nft_handle *h,const char *chain,
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_set_str(c, NFTNL_CHAIN_NAME, newname);
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_set_u64(c, NFTNL_CHAIN_HANDLE, handle);
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- ret = batch_chain_add(h, NFT_COMPAT_CHAIN_RENAME, c);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_RENAME, c))
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ return 0;
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
/* the core expects 1 for success and 0 for error */
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- return ret == 0 ? 1 : 0;
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ return 1;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
}
|
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
bool nft_table_find(struct nft_handle *h, const char *tablename)
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
@@ -3217,7 +3216,7 @@ static int __nft_chain_zero_counters(struct nftnl_chain *c, void *data)
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![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_set_u64(c, NFTNL_CHAIN_PACKETS, 0);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_set_u64(c, NFTNL_CHAIN_BYTES, 0);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
nftnl_chain_unset(c, NFTNL_CHAIN_HANDLE);
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
- if (batch_chain_add(h, NFT_COMPAT_CHAIN_ZERO, c))
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
+ if (!batch_chain_add(h, NFT_COMPAT_CHAIN_ZERO, c))
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
return -1;
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
}
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
--
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
2.28.0
|
|
![](https://seccdn.libravatar.org/avatar/eca4d0658e293ac828929c05684948cb411ba891fa2ad2130aafa91b664e89ad?s=16&d=retro) |
9c35a8 |
|