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pppos: fix in_tail null

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happens during quick reconnect of LTE ppp session
This commit is contained in:
Peter Putz 2020-11-11 12:21:01 +01:00 committed by Simon Goldschmidt
parent 6b734bbb2c
commit a9664395b0
1 changed files with 6 additions and 0 deletions
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6
src/netif/ppp/pppos.c
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@ -536,6 +536,12 @@ pppos_input(ppp_pcb *ppp, const void *s, int l)
/* Note: If you get lots of these, check for UART frame errors or try different baud rate */
LINK_STATS_INC(link.chkerr);
pppos_input_drop(pppos);
} else if (!pppos->in_tail) {
PPPDEBUG(LOG_INFO,
("pppos_input[%d]: Dropping null in_tail\n",
ppp->netif->num));
LINK_STATS_INC(link.drop);
pppos_input_drop(pppos);
/* Otherwise it's a good packet so pass it on. */
} else {
struct pbuf *inp;