diff options
Diffstat (limited to 'include/net/eth.h')
| -rw-r--r-- | include/net/eth.h | 64 |
1 files changed, 41 insertions, 23 deletions
diff --git a/include/net/eth.h b/include/net/eth.h index e6dc8a7ba0..3b80b6e07f 100644 --- a/include/net/eth.h +++ b/include/net/eth.h @@ -31,6 +31,9 @@ #define ETH_ALEN 6 #define ETH_HLEN 14 +#define ETH_ZLEN 60 /* Min. octets in frame without FCS */ +#define ETH_FCS_LEN 4 +#define ETH_MTU 1500 struct eth_header { uint8_t h_dest[ETH_ALEN]; /* destination eth addr */ @@ -158,7 +161,7 @@ struct tcp_hdr { u_short th_dport; /* destination port */ uint32_t th_seq; /* sequence number */ uint32_t th_ack; /* acknowledgment number */ -#ifdef HOST_WORDS_BIGENDIAN +#if HOST_BIG_ENDIAN u_char th_off : 4, /* data offset */ th_x2:4; /* (unused) */ #else @@ -177,6 +180,8 @@ struct tcp_hdr { #define TH_PUSH 0x08 #define TH_ACK 0x10 #define TH_URG 0x20 +#define TH_ECE 0x40 +#define TH_CWR 0x80 u_short th_win; /* window */ u_short th_sum; /* checksum */ u_short th_urp; /* urgent pointer */ @@ -184,6 +189,7 @@ struct tcp_hdr { #define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt #define ip6_ecn_acc ip6_ctlun.ip6_un3.ip6_un3_ecn +#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen #define PKT_GET_ETH_HDR(p) \ ((struct eth_header *)(p)) @@ -218,6 +224,7 @@ struct tcp_hdr { #define IP_HEADER_VERSION_6 (6) #define IP_PROTO_TCP (6) #define IP_PROTO_UDP (17) +#define IP_PROTO_SCTP (132) #define IPTOS_ECN_MASK 0x03 #define IPTOS_ECN(x) ((x) & IPTOS_ECN_MASK) #define IPTOS_ECN_CE 0x03 @@ -308,10 +315,10 @@ eth_get_l2_hdr_length(const void *p) } static inline uint32_t -eth_get_l2_hdr_length_iov(const struct iovec *iov, int iovcnt) +eth_get_l2_hdr_length_iov(const struct iovec *iov, size_t iovcnt, size_t iovoff) { uint8_t p[sizeof(struct eth_header) + sizeof(struct vlan_header)]; - size_t copied = iov_to_buf(iov, iovcnt, 0, p, ARRAY_SIZE(p)); + size_t copied = iov_to_buf(iov, iovcnt, iovoff, p, ARRAY_SIZE(p)); if (copied < ARRAY_SIZE(p)) { return copied; @@ -336,26 +343,19 @@ eth_get_pkt_tci(const void *p) size_t eth_strip_vlan(const struct iovec *iov, int iovcnt, size_t iovoff, - uint8_t *new_ehdr_buf, + void *new_ehdr_buf, uint16_t *payload_offset, uint16_t *tci); size_t -eth_strip_vlan_ex(const struct iovec *iov, int iovcnt, size_t iovoff, - uint16_t vet, uint8_t *new_ehdr_buf, +eth_strip_vlan_ex(const struct iovec *iov, int iovcnt, size_t iovoff, int index, + uint16_t vet, uint16_t vet_ext, void *new_ehdr_buf, uint16_t *payload_offset, uint16_t *tci); uint16_t eth_get_l3_proto(const struct iovec *l2hdr_iov, int iovcnt, size_t l2hdr_len); -void eth_setup_vlan_headers_ex(struct eth_header *ehdr, uint16_t vlan_tag, - uint16_t vlan_ethtype, bool *is_new); - -static inline void -eth_setup_vlan_headers(struct eth_header *ehdr, uint16_t vlan_tag, - bool *is_new) -{ - eth_setup_vlan_headers_ex(ehdr, vlan_tag, ETH_P_VLAN, is_new); -} +void eth_setup_vlan_headers(struct eth_header *ehdr, size_t *ehdr_size, + uint16_t vlan_tag, uint16_t vlan_ethtype); uint8_t eth_get_gso_type(uint16_t l3_proto, uint8_t *l3_hdr, uint8_t l4proto); @@ -377,18 +377,25 @@ typedef struct eth_ip4_hdr_info_st { bool fragment; } eth_ip4_hdr_info; +typedef enum EthL4HdrProto { + ETH_L4_HDR_PROTO_INVALID, + ETH_L4_HDR_PROTO_TCP, + ETH_L4_HDR_PROTO_UDP, + ETH_L4_HDR_PROTO_SCTP +} EthL4HdrProto; + typedef struct eth_l4_hdr_info_st { union { struct tcp_header tcp; struct udp_header udp; } hdr; + EthL4HdrProto proto; bool has_tcp_data; } eth_l4_hdr_info; -void eth_get_protocols(const struct iovec *iov, int iovcnt, - bool *isip4, bool *isip6, - bool *isudp, bool *istcp, +void eth_get_protocols(const struct iovec *iov, size_t iovcnt, size_t iovoff, + bool *hasip4, bool *hasip6, size_t *l3hdr_off, size_t *l4hdr_off, size_t *l5hdr_off, @@ -396,11 +403,6 @@ void eth_get_protocols(const struct iovec *iov, int iovcnt, eth_ip4_hdr_info *ip4hdr_info, eth_l4_hdr_info *l4hdr_info); -void eth_setup_ip4_fragmentation(const void *l2hdr, size_t l2hdr_len, - void *l3hdr, size_t l3hdr_len, - size_t l3payload_len, - size_t frag_offset, bool more_frags); - void eth_fix_ip4_checksum(void *l3hdr, size_t l3hdr_len); @@ -419,4 +421,20 @@ bool eth_parse_ipv6_hdr(const struct iovec *pkt, int pkt_frags, size_t ip6hdr_off, eth_ip6_hdr_info *info); +/** + * eth_pad_short_frame - pad a short frame to the minimum Ethernet frame length + * + * If the Ethernet frame size is shorter than 60 bytes, it will be padded to + * 60 bytes at the address @padded_pkt. + * + * @padded_pkt: buffer address to hold the padded frame + * @padded_buflen: pointer holding length of @padded_pkt. If the frame is + * padded, the length will be updated to the padded one. + * @pkt: address to hold the original Ethernet frame + * @pkt_size: size of the original Ethernet frame + * @return true if the frame is padded, otherwise false + */ +bool eth_pad_short_frame(uint8_t *padded_pkt, size_t *padded_buflen, + const void *pkt, size_t pkt_size); + #endif |