[RFC PATCH v2 14/21] net/tcp: add netgpu ioctl setting up zero copy RX queues
STALE2259d
From: Jonathan Lemon <hidden>
Date: 2020-07-27 22:46:16
Subsystem:
networking [general], networking [tcp], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Neal Cardwell, Linus Torvalds
Revision v2 of 2 in this series.
Revisions (2)
- rfc [diff vs current]
- v2 current
From: Jonathan Lemon <redacted> Netgpu delivers iovecs to userspace for incoming data, but the destination queue must be attached to the socket. Do this via and ioctl call on the socket itself. Signed-off-by: Jonathan Lemon <redacted> --- net/ipv4/tcp.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 27de9380ed14..261c28ccc8f6 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c@@ -279,6 +279,7 @@ #include <linux/uaccess.h> #include <asm/ioctls.h> #include <net/busy_poll.h> +#include <net/netgpu.h> struct percpu_counter tcp_orphan_count; EXPORT_SYMBOL_GPL(tcp_orphan_count);
@@ -636,6 +637,10 @@ int tcp_ioctl(struct sock *sk, int cmd, unsigned long arg) answ = READ_ONCE(tp->write_seq) - READ_ONCE(tp->snd_nxt); break; +#if IS_ENABLED(CONFIG_NETGPU) + case NETGPU_SOCK_IOCTL_ATTACH_QUEUES: /* SIOCPROTOPRIVATE */ + return netgpu_attach_socket(sk, (void __user *)arg); +#endif default: return -ENOIOCTLCMD; }
--
2.24.1