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authorYan Zhai <yan@cloudflare.com>2023-10-24 17:26:33 +0300
committerJakub Kicinski <kuba@kernel.org>2023-10-26 04:04:29 +0300
commite57a34478586fe3562560ccebd655b707a5b4a56 (patch)
tree85fd7fa5d3e08af7ccd7769b4e11fa58ccaadd83 /include/net/dst.h
parent8846f9a04b10b7f61214425409838d764df7080d (diff)
downloadlinux-e57a34478586fe3562560ccebd655b707a5b4a56.tar.xz
ipv6: drop feature RTAX_FEATURE_ALLFRAG
RTAX_FEATURE_ALLFRAG was added before the first git commit: https://www.mail-archive.com/bk-commits-head@vger.kernel.org/msg03399.html The feature would send packets to the fragmentation path if a box receives a PMTU value with less than 1280 byte. However, since commit 9d289715eb5c ("ipv6: stop sending PTB packets for MTU < 1280"), such message would be simply discarded. The feature flag is neither supported in iproute2 utility. In theory one can still manipulate it with direct netlink message, but it is not ideal because it was based on obsoleted guidance of RFC-2460 (replaced by RFC-8200). The feature would always test false at the moment, so remove related code or mark them as unused. Signed-off-by: Yan Zhai <yan@cloudflare.com> Reviewed-by: Florian Westphal <fw@strlen.de> Reviewed-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/r/d78e44dcd9968a252143ffe78460446476a472a1.1698156966.git.yan@cloudflare.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/dst.h')
-rw-r--r--include/net/dst.h7
1 files changed, 0 insertions, 7 deletions
diff --git a/include/net/dst.h b/include/net/dst.h
index f8b8599a0600..f5dfc8fb7b37 100644
--- a/include/net/dst.h
+++ b/include/net/dst.h
@@ -222,13 +222,6 @@ static inline unsigned long dst_metric_rtt(const struct dst_entry *dst, int metr
return msecs_to_jiffies(dst_metric(dst, metric));
}
-static inline u32
-dst_allfrag(const struct dst_entry *dst)
-{
- int ret = dst_feature(dst, RTAX_FEATURE_ALLFRAG);
- return ret;
-}
-
static inline int
dst_metric_locked(const struct dst_entry *dst, int metric)
{