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tcp/dccp: add tw->tw_bslot

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We want to allow inet_twsk_kill() working even if netns
has been dismantled/freed, to get rid of inet_twsk_purge().

This patch adds tw->tw_bslot to cache the bind bucket slot
so that inet_twsk_kill() no longer needs to dereference twsk_net(tw)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2022-01-24 12:24:52 -08:00 • committed by David S. Miller
parent 8a0de61c40
commit d507204d3c
2 changed files with 8 additions and 4 deletions
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1
include/net/inet_timewait_sock.h
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@ -72,6 +72,7 @@ struct inet_timewait_sock {
tw_tos : 8;
u32 tw_txhash;
u32 tw_priority;
u32 tw_bslot; /* bind bucket slot */
struct timer_list tw_timer;
struct inet_bind_bucket *tw_tb;
};