Mercurial > ecos
diff packages/io/eth/current/src/net/eth_drv.c @ 289:bd1db6a90df9
Fix problems with overflowing scatter-gather lists.
| author | gthomas |
|---|---|
| date | Tue, 13 Aug 2002 15:55:53 +0000 |
| parents | 1eb79d208648 |
| children | e2b797ca39b4 |
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--- a/packages/io/eth/current/src/net/eth_drv.c +++ b/packages/io/eth/current/src/net/eth_drv.c @@ -619,6 +619,9 @@ static void eth_drv_send(struct ifnet *ifp) { struct eth_drv_sc *sc = ifp->if_softc; +#if MAX_ETH_DRV_SG > 64 + static // Avoid large stack requirements +#endif struct eth_drv_sg sg_list[MAX_ETH_DRV_SG]; int sg_len; struct mbuf *m0, *m; @@ -692,8 +695,12 @@ eth_drv_send(struct ifnet *ifp) #endif if ( MAX_ETH_DRV_SG < sg_len ) { #ifdef CYGPKG_IO_ETH_DRIVERS_WARN_NO_MBUFS + int needed = 0; + struct mbuf *m1; + for (m1 = m0; m1 ; m1 = m1->m_next) needed++; START_CONSOLE(); - diag_printf("too many mbufs to tx, %d > %d\n", sg_len, MAX_ETH_DRV_SG ); + diag_printf("too many mbufs to tx, %d > %d, need %d\n", + sg_len, MAX_ETH_DRV_SG, needed ); END_CONSOLE(); #endif sg_len = 0; @@ -784,6 +791,9 @@ eth_drv_recv(struct eth_drv_sc *sc, int struct mbuf *top, **mp, *m; int mlen; unsigned char *data; +#if MAX_ETH_DRV_SG > 64 + static // Avoid large stack requirements +#endif struct eth_drv_sg sg_list[MAX_ETH_DRV_SG]; int sg_len;