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Fixed race condition detecting reflections when threaded reading and writing is enabled.

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Fixed handling of Jumbo Packets and LSO (Large Send Offload) behaviorst to:
1) Avoid truncation of very large sends
2) handle the case where the host network stack may not populate the IP header length for a large send.
This commit is contained in:
Mark Pizzolato
2011-08-12 17:53:32 -07:00
parent 724cdfcfb1
commit 015f2bb82e
2 changed files with 63 additions and 28 deletions
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5
sim_ether.h
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@@ -118,7 +118,7 @@
#define ETH_DEV_DESC_MAX 256 /* maximum device description size */
#define ETH_MIN_PACKET 60 /* minimum ethernet packet size */
#define ETH_MAX_PACKET 1514 /* maximum ethernet packet size */
#define ETH_MAX_JUMBO_FRAME 16384 /* maximum ethernet jumbo frame size */
#define ETH_MAX_JUMBO_FRAME 65536 /* maximum ethernet jumbo frame size (or Offload Segment Size) */
#define ETH_MAX_DEVICE 10 /* maximum ethernet devices */
#define ETH_CRC_SIZE 4 /* ethernet CRC size */
#define ETH_FRAME_SIZE (ETH_MAX_PACKET+ETH_CRC_SIZE) /* ethernet maximum frame size */
@@ -193,10 +193,11 @@ struct eth_device {
ETH_MAC host_nic_phy_hw_addr; /* MAC address of the attached NIC */
uint32 jumbo_fragmented; /* Giant IPv4 Frames Fragmented */
uint32 jumbo_dropped; /* Giant Frames Dropped */
uint32 jumbo_truncated; /* Giant Frames too big for capture buffer - Dropped */
DEVICE* dptr; /* device ethernet is attached to */
uint32 dbit; /* debugging bit */
int reflections; /* packet reflections on interface */
int need_crc; /* device needs CRC (Cyclic Redundancy Check) */
int need_crc; /* device needs CRC (Cyclic Redundancy Check) */
#if defined (USE_READER_THREAD)
int asynch_io; /* Asynchronous Interrupt scheduling enabled */
int asynch_io_latency; /* instructions to delay pending interrupt */