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sock: struct proto hash function may error

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In order to support fast reuseport lookups in TCP, the hash function
defined in struct proto must be capable of returning an error code.
This patch changes the function signature of all related hash functions
to return an integer and handles or propagates this return value at
all call sites.

Signed-off-by: Craig Gallek <kraig@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Craig Gallek
2016-02-10 11:50:35 -05:00
committed by David S. Miller
parent 30c1de08dd
commit 086c653f58
15 changed files with 53 additions and 25 deletions
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9
net/ipv4/af_inet.c
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@@ -370,7 +370,11 @@ lookup_protocol:
*/
inet->inet_sport = htons(inet->inet_num);
/* Add to protocol hash chains. */
sk->sk_prot->hash(sk);
err = sk->sk_prot->hash(sk);
if (err) {
sk_common_release(sk);
goto out;
}
}
if (sk->sk_prot->init) {
@@ -1142,8 +1146,7 @@ static int inet_sk_reselect_saddr(struct sock *sk)
* Besides that, it does not check for connection
* uniqueness. Wait for troubles.
*/
__sk_prot_rehash(sk);
return 0;
return __sk_prot_rehash(sk);
}
int inet_sk_rebuild_header(struct sock *sk)