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authorJens Axboe <axboe@kernel.dk>2024-05-09 18:35:01 +0300
committerJens Axboe <axboe@kernel.dk>2024-05-14 03:19:20 +0300
commit7951e36ac620a9ba1bae0ac0ddd62d2e82285725 (patch)
tree1154f51ffebda2c624b11f73755dda2a86bc4b7d /include/net
parent0645fbe760afcc5332c858d1cbf416bf77ef3c29 (diff)
downloadlinux-7951e36ac620a9ba1bae0ac0ddd62d2e82285725.tar.xz
net: pass back whether socket was empty post accept
This adds an 'is_empty' argument to struct proto_accept_arg, which can be used to pass back information on whether or not the given socket has more connections to accept post the one just accepted. To utilize this information, the caller should initialize the 'is_empty' field to, eg, -1 and then check for 0/1 after the accept. If the field has been set, the caller knows whether there are more pending connections or not. If the field remains -1 after the accept call, the protocol doesn't support passing back this information. This patch wires it up for ipv4/6 TCP. Acked-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/net')
-rw-r--r--include/net/sock.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 217079b3e3e8..5f4d0629348f 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1197,6 +1197,7 @@ static inline void sk_prot_clear_nulls(struct sock *sk, int size)
struct proto_accept_arg {
int flags;
int err;
+ int is_empty;
bool kern;
};