diff mbox series

[bpf-next,v2,2/3] tcp: Add the data length in skmsg to SIOCINQ ioctl

Message ID 1700565725-2706-3-git-send-email-yangpc@wangsu.com (mailing list archive)
State Changes Requested
Delegated to: BPF
Headers show
Series skmsg: Add the data length in skmsg to SIOCINQ ioctl and rx_queue | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/codegen success Generated files up to date
netdev/tree_selection success Clearly marked for bpf-next, async
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 1136 this patch: 1136
netdev/cc_maintainers warning 2 maintainers not CCed: dsahern@kernel.org pabeni@redhat.com
netdev/build_clang success Errors and warnings before: 1162 this patch: 1162
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netdev/deprecated_api success None detected
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netdev/verify_fixes success No Fixes tag
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 15 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
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Commit Message

Pengcheng Yang Nov. 21, 2023, 11:22 a.m. UTC 
SIOCINQ ioctl returns the number unread bytes of the receive
queue but does not include the ingress_msg queue. With the
sk_msg redirect, an application may get a value 0 if it calls
SIOCINQ ioctl before recv() to determine the readable size.

Signed-off-by: Pengcheng Yang <yangpc@wangsu.com>
---
 net/ipv4/tcp.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 3d3a24f79573..04da0684c397 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -267,6 +267,7 @@ 
 #include <linux/errqueue.h>
 #include <linux/static_key.h>
 #include <linux/btf.h>
+#include <linux/skmsg.h>
 
 #include <net/icmp.h>
 #include <net/inet_common.h>
@@ -613,7 +614,7 @@  int tcp_ioctl(struct sock *sk, int cmd, int *karg)
 			return -EINVAL;
 
 		slow = lock_sock_fast(sk);
-		answ = tcp_inq(sk);
+		answ = tcp_inq(sk) + sk_msg_queue_len(sk);
 		unlock_sock_fast(sk, slow);
 		break;
 	case SIOCATMARK: