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LWIP - avoid an assert when a driver restarts

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Tomas Hruby 2013-02-07 09:50:58 +00:00 committed by Lionel Sambuc
parent 00f08c4868
commit 9582cbffc5
1 changed files with 9 additions and 0 deletions
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9
servers/lwip/driver.c
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@ -430,6 +430,15 @@ void driver_up(const char * label, endpoint_t ep)
nic->tx_buffer = debug_malloc(2048);
if (nic->tx_buffer == NULL)
panic("Cannot allocate tx_buffer");
/* When driver restarts, the rx_pbuf is likely ready to receive data
* from its previous instance. We free the buffer here, nobody depends
* on it. A new one is allocated when we send a new read request to the
* driver.
*/
if (nic->rx_pbuf) {
pbuf_free(nic->rx_pbuf);
nic->rx_pbuf = NULL;
}
/* prepare the RX grant once and forever */
if (cpf_setgrant_direct(nic->rx_iogrant,