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From 83b78ff645260a51ff5d643169009faeb3032d3c Mon Sep 17 00:00:00 2001
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From: Andrea Claudi <aclaudi@redhat.com>
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Date: Tue, 18 Jun 2019 20:02:54 +0200
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Subject: [PATCH] tc_filter: resolve device name before parsing filter
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1721291
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Upstream Status: iproute2.git commit 01ea76b1cf545
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commit 01ea76b1cf54516c71a9a54fba672410ada2cccb
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Author: Jakub Kicinski <jakub.kicinski@netronome.com>
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Date: Thu Nov 23 18:12:06 2017 -0800
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tc_filter: resolve device name before parsing filter
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Move resolving device name into an ifindex before calling filter
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specific callbacks. This way if filters need the ifindex, they
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can read it from the request.
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Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
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Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
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Acked-by: Daniel Borkmann <daniel@iogearbox.net>
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---
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tc/tc_filter.c | 50 ++++++++++++++++++++++++--------------------------
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1 file changed, 24 insertions(+), 26 deletions(-)
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diff --git a/tc/tc_filter.c b/tc/tc_filter.c
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index 8dbebf1ffa32a..e479039159df6 100644
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--- a/tc/tc_filter.c
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+++ b/tc/tc_filter.c
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@@ -161,6 +161,16 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
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if (k[0])
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addattr_l(&req.n, sizeof(req), TCA_KIND, k, strlen(k)+1);
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+ if (d[0]) {
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+ ll_init_map(&rth);
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+
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+ req.t.tcm_ifindex = ll_name_to_index(d);
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+ if (req.t.tcm_ifindex == 0) {
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+ fprintf(stderr, "Cannot find device \"%s\"\n", d);
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+ return 1;
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+ }
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+ }
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+
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if (q) {
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if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
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return 1;
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@@ -183,17 +193,6 @@ static int tc_filter_modify(int cmd, unsigned int flags, int argc, char **argv)
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if (est.ewma_log)
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addattr_l(&req.n, sizeof(req), TCA_RATE, &est, sizeof(est));
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-
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- if (d[0]) {
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- ll_init_map(&rth);
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-
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- req.t.tcm_ifindex = ll_name_to_index(d);
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- if (req.t.tcm_ifindex == 0) {
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- fprintf(stderr, "Cannot find device \"%s\"\n", d);
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- return 1;
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- }
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- }
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-
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if (rtnl_talk(&rth, &req.n, NULL) < 0) {
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fprintf(stderr, "We have an error talking to the kernel\n");
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return 2;
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@@ -453,10 +452,23 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
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return -1;
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}
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+ if (d[0]) {
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+ ll_init_map(&rth);
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+
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+ req.t.tcm_ifindex = ll_name_to_index(d);
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+ if (req.t.tcm_ifindex == 0) {
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+ fprintf(stderr, "Cannot find device \"%s\"\n", d);
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+ return 1;
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+ }
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+ filter_ifindex = req.t.tcm_ifindex;
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+ } else {
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+ fprintf(stderr, "Must specify netdevice \"dev\"\n");
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+ return -1;
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+ }
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+
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if (q->parse_fopt(q, fhandle, argc, argv, &req.n))
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return 1;
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-
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if (!fhandle) {
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fprintf(stderr, "Must specify filter \"handle\"\n");
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return -1;
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@@ -471,20 +483,6 @@ static int tc_filter_get(int cmd, unsigned int flags, int argc, char **argv)
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return -1;
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}
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- if (d[0]) {
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- ll_init_map(&rth);
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-
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- req.t.tcm_ifindex = ll_name_to_index(d);
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- if (req.t.tcm_ifindex == 0) {
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- fprintf(stderr, "Cannot find device \"%s\"\n", d);
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- return 1;
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- }
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- filter_ifindex = req.t.tcm_ifindex;
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- } else {
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- fprintf(stderr, "Must specify netdevice \"dev\"\n");
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- return -1;
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- }
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-
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if (rtnl_talk(&rth, &req.n, &answer) < 0) {
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fprintf(stderr, "We have an error talking to the kernel\n");
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return 2;
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--
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2.20.1
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