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Fixed bug #28098: Nagle can prevent fast retransmit from sending segment by basing the nagle-decision on TF_INFR also

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goldsimon 2009-11-26 16:42:13 +00:00
parent 4391463832
commit 43fd5c28b5
2 changed files with 6 additions and 1 deletions
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4
CHANGELOG
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@ -46,6 +46,10 @@ HISTORY
++ Bugfixes:
2009-11-26: Simon Goldschmidt
* tcp.h: Fixed bug #28098: Nagle can prevent fast retransmit from sending
segment
2009-11-26: Simon Goldschmidt
* tcp.h, sockets.c: Fixed bug #28099: API required to disable Nagle
algorithm at PCB level

3
src/include/lwip/tcp.h
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@ -138,9 +138,10 @@ u32_t tcp_update_rcv_ann_wnd(struct tcp_pcb *pcb);
* - the TF_NODELAY flag is set (nagle algorithm turned off for this pcb) or
* - the only unsent segment is at least pcb->mss bytes long (or there is more
* than one unsent segment - with lwIP, this can happen although unsent->len < mss)
* - or if we are in fast-retransmit (TF_INFR)
*/
#define tcp_do_output_nagle(tpcb) ((((tpcb)->unacked == NULL) || \
((tpcb)->flags & TF_NODELAY) || \
((tpcb)->flags & (TF_NODELAY | TF_INFR)) || \
(((tpcb)->unsent != NULL) && (((tpcb)->unsent->next != NULL) || \
((tpcb)->unsent->len >= (tpcb)->mss))) \
) ? 1 : 0)