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| author | Nikhil Chandru Rao | 2006-06-28 11:59:27 +0200 |
|---|---|---|
| committer | Nikhil Chandru Rao | 2006-06-28 11:59:27 +0200 |
| commit | 6e2c97b0c0a5eeec99bbfce1eec075ded11bb591 (patch) | |
| tree | b6819704317dcf45fb401de71baf6717bcb8b32a /src/net/ipv4.c | |
| parent | IP6 specifications (diff) | |
| download | ipxe-6e2c97b0c0a5eeec99bbfce1eec075ded11bb591.tar.gz ipxe-6e2c97b0c0a5eeec99bbfce1eec075ded11bb591.tar.xz ipxe-6e2c97b0c0a5eeec99bbfce1eec075ded11bb591.zip | |
Added ipv4_pseudo_header structure
Diffstat (limited to 'src/net/ipv4.c')
| -rw-r--r-- | src/net/ipv4.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/src/net/ipv4.c b/src/net/ipv4.c index 91b2d7ff..b770301a 100644 --- a/src/net/ipv4.c +++ b/src/net/ipv4.c @@ -124,21 +124,18 @@ static void ipv4_dump ( struct iphdr *iphdr __unused ) { void ipv4_tx_csum ( struct pk_buff *pkb, uint8_t trans_proto ) { struct iphdr *iphdr = pkb->data; - void *pshdr = malloc ( IP_PSHLEN ); - void *csum_offset = iphdr + IP_HLEN + ( trans_proto == IP_UDP ? 6 : 16 ); - int offset = 0; + struct ipv4_pseudo_header pshdr; + void *csum_offset = iphdr + sizeof ( *iphdr ) + ( trans_proto == IP_UDP ? 6 : 16 ); /* Calculate pseudo header */ - memcpy ( pshdr, &iphdr->src, sizeof ( in_addr ) ); - offset += sizeof ( in_addr ); - memcpy ( pshdr + offset, &iphdr->dest, sizeof ( in_addr ) ); - offset += sizeof ( in_addr ); - *( ( uint8_t* ) ( pshdr + offset++ ) ) = 0x00; - *( ( uint8_t* ) ( pshdr + offset++ ) ) = iphdr->protocol; - *( ( uint16_t* ) ( pshdr + offset ) ) = pkb_len ( pkb ) - IP_HLEN; + pshdr.src = iphdr->src; + pshdr.dest = iphdr->dest; + pshdr.zero_padding = 0x00; + pshdr.protocol = iphdr->protocol; + pshdr.len = htons ( pkb_len ( pkb ) - sizeof ( *iphdr ) ); /* Update the checksum value */ - *( ( uint16_t* ) csum_offset ) = *( ( uint16_t* ) csum_offset ) + calc_chksum ( pshdr, IP_PSHLEN ); + *( ( uint16_t* ) csum_offset ) = *( ( uint16_t* ) csum_offset ) + calc_chksum ( &pshdr, IP_PSHLEN ); } /** |