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| author | Eric Dumazet <edumazet@google.com> | 2023-09-12 19:02:07 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-09-15 12:33:47 +0300 |
| commit | 1086ca7cce292bb498d7f8f85f4593c9ef4902b7 (patch) | |
| tree | 91e02950dc0a70e6057ccc38d136690255ac2139 /net/ipv6/ipv6_sockglue.c | |
| parent | 5121516b0c4736b7977d977b239e36d23ec64401 (diff) | |
| download | linux-1086ca7cce292bb498d7f8f85f4593c9ef4902b7.tar.xz | |
ipv6: lockless IPV6_DONTFRAG implementation
Move np->dontfrag flag to inet->inet_flags to fix data-races.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6/ipv6_sockglue.c')
| -rw-r--r-- | net/ipv6/ipv6_sockglue.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c index d5d428a695f7..33dd4dd872e6 100644 --- a/net/ipv6/ipv6_sockglue.c +++ b/net/ipv6/ipv6_sockglue.c @@ -478,6 +478,9 @@ int do_ipv6_setsockopt(struct sock *sk, int level, int optname, inet6_assign_bit(AUTOFLOWLABEL, sk, valbool); inet6_set_bit(AUTOFLOWLABEL_SET, sk); return 0; + case IPV6_DONTFRAG: + inet6_assign_bit(DONTFRAG, sk, valbool); + return 0; } if (needs_rtnl) rtnl_lock(); @@ -970,10 +973,6 @@ done: goto e_inval; retv = __ip6_sock_set_addr_preferences(sk, val); break; - case IPV6_DONTFRAG: - np->dontfrag = valbool; - retv = 0; - break; case IPV6_RECVFRAGSIZE: np->rxopt.bits.recvfragsize = valbool; retv = 0; @@ -1442,7 +1441,7 @@ int do_ipv6_getsockopt(struct sock *sk, int level, int optname, break; case IPV6_DONTFRAG: - val = np->dontfrag; + val = inet6_test_bit(DONTFRAG, sk); break; case IPV6_AUTOFLOWLABEL: |