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File _service:tar_scm:0118-udp-do-not-merge-data-into-last-pbuf.patch of Package gazelle
From b90801a943f140a62761158a058d1076212dccf3 Mon Sep 17 00:00:00 2001 From: yangchen <yangchen145@huawei.com> Date: Thu, 18 Jan 2024 10:01:52 +0800 Subject: [PATCH] udp: do not merge data into last pbuf --- src/lstack/core/lstack_lwip.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/src/lstack/core/lstack_lwip.c b/src/lstack/core/lstack_lwip.c index 87ec1f5..6ebe589 100644 --- a/src/lstack/core/lstack_lwip.c +++ b/src/lstack/core/lstack_lwip.c @@ -542,14 +542,14 @@ static ssize_t do_lwip_fill_sendring(struct lwip_sock *sock, const void *buf, si } struct protocol_stack *stack = sock->stack; - if (!stack|| len == 0) { + if (!stack || len == 0) { return 0; } ssize_t send_len = 0; /* merge data into last pbuf */ - if (sock->remain_len) { + if (!NETCONN_IS_UDP(sock) && sock->remain_len) { send_len = merge_data_lastpbuf(sock, (char *)buf, len); if (send_len >= len) { send_len = len; @@ -1045,6 +1045,11 @@ ssize_t do_lwip_read_from_stack(int32_t fd, void *buf, size_t len, int32_t flags calculate_lstack_latency(&sock->stack->latency, pbuf, GAZELLE_LATENCY_READ); } gazelle_ring_read_over(sock->recv_ring); + + /* in udp, if pbuf remaining len less than copy_len, discard these packets */ + if (recvd > 0 && NETCONN_IS_UDP(sock)) { + break; + } } } -- 2.33.0
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