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From: David Gibson <david@gibson.dropbear.id.au>
To: passt-dev@passt.top, Stefano Brivio <sbrivio@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Subject: [PATCH v20 3/5] fixup?: loop on EGAIN in repair queue
Date: Thu, 13 Feb 2025 15:58:11 +1100	[thread overview]
Message-ID: <20250213045813.3767488-4-david@gibson.dropbear.id.au> (raw)
In-Reply-To: <20250213045813.3767488-1-david@gibson.dropbear.id.au>

On at least one occassion, I saw the repair queue fail with an EAGAIN.
libsoccr doesn't do this, so I'm not sure whether this is really the right
thing.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 tcp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tcp.c b/tcp.c
index f18b2913..39035e14 100644
--- a/tcp.c
+++ b/tcp.c
@@ -2957,6 +2957,8 @@ static int tcp_flow_repair_queue(int s, size_t len, uint8_t *buf)
 		ssize_t rc = send(s, p, MIN(len, chunk), 0);
 
 		if (rc < 0) {
+			if (errno == EAGAIN || errno == EWOULDBLOCK)
+				continue;
 			if ((errno == ENOBUFS || errno == ENOMEM) &&
 			    chunk >= TCP_MIGRATE_RESTORE_CHUNK_MIN) {
 				chunk /= 2;
-- 
@@ -2957,6 +2957,8 @@ static int tcp_flow_repair_queue(int s, size_t len, uint8_t *buf)
 		ssize_t rc = send(s, p, MIN(len, chunk), 0);
 
 		if (rc < 0) {
+			if (errno == EAGAIN || errno == EWOULDBLOCK)
+				continue;
 			if ((errno == ENOBUFS || errno == ENOMEM) &&
 			    chunk >= TCP_MIGRATE_RESTORE_CHUNK_MIN) {
 				chunk /= 2;
-- 
2.48.1


  parent reply	other threads:[~2025-02-13  4:58 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-02-13  4:58 [PATCH v20 0/5] State migration David Gibson
2025-02-13  4:58 ` [PATCH v20 1/5] migrate: Migrate TCP flows David Gibson
2025-02-13  4:58 ` [PATCH v20 2/5] test: Add migration tests David Gibson
2025-02-13  4:58 ` David Gibson [this message]
2025-02-13  4:58 ` [PATCH v20 4/5] depause David Gibson
2025-02-13  4:58 ` [PATCH v20 5/5] fixup: TCP_REPAIR_WINDOW before send unsent David Gibson

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