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Fix Ethernet buffer size

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1500 bytes is payload size, which is OK for tx. On the rx side, a full 802.1Q-tagged frame size is 1522 bytes, without the 4-byte CRC = 1518 bytes (1514 for non-VLAN-tagged frames).
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Sergio R. Caprile authored and GitHub committed 2022-09-06 16:53:26 -03:00
1 parent 9dea02e578
commit 419dd50255
1 file changed
+1 -1
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mip/mip.c
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@@ -717,7 +717,7 @@ void mip_init(struct mg_mgr *mgr, struct mip_cfg *ipcfg,
if (driver->init && !driver->init(ipcfg->mac, driver_data)) {
MG_ERROR(("driver init failed"));
} else {
size_t maxpktsize = 1500, qlen = driver->setrx ? 1024 * 16 : 0;
size_t maxpktsize = 1518, qlen = driver->setrx ? 1024 * 16 : 0;
struct mip_if *ifp =
(struct mip_if *) calloc(1, sizeof(*ifp) + 2 * maxpktsize + qlen);
memcpy(ifp->mac, ipcfg->mac, sizeof(ifp->mac));