diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ipcpd/eth/eth.c | 119 |
1 files changed, 57 insertions, 62 deletions
diff --git a/src/ipcpd/eth/eth.c b/src/ipcpd/eth/eth.c index ce806dc2..9bbadf91 100644 --- a/src/ipcpd/eth/eth.c +++ b/src/ipcpd/eth/eth.c @@ -88,67 +88,70 @@ #define NETMAP_WITH_LIBS #include <net/netmap_user.h> #elif defined(HAVE_BPF) -#define BPF_DEV_MAX 256 -#define BPF_BLEN sysconf(_SC_PAGESIZE) +#define BPF_DEV_MAX 256 +#define BPF_BLEN sysconf(_SC_PAGESIZE) #include <net/bpf.h> #endif -#define MAC_SIZE 6 -#define ETH_TYPE_LENGTH_SIZE 2 -#define ETH_HEADER_SIZE (2 * MAC_SIZE + ETH_TYPE_LENGTH_SIZE) +#define MAC_SIZE 6 +#define ETH_TYPE_LENGTH_SIZE sizeof(uint16_t) +#define ETH_HEADER_SIZE (2 * MAC_SIZE + ETH_TYPE_LENGTH_SIZE) #if defined(BUILD_ETH_DIX) -#define THIS_TYPE IPCP_ETH_DIX -#define MGMT_EID 0 -#define DIX_HEADER_SIZE 2 -#define MAX_EIDS (1 << (8 * DIX_HEADER_SIZE)) -#define ETH_MAX_SDU_SIZE (1500 - DIX_HEADER_SIZE) -#define ETH_FRAME_SIZE (ETH_HEADER_SIZE + DIX_HEADER_SIZE \ - + ETH_MAX_SDU_SIZE) +#define THIS_TYPE IPCP_ETH_DIX +#define MGMT_EID 0 +#define DIX_EID_SIZE sizeof(uint16_t) +#define DIX_LENGTH_SIZE sizeof(uint16_t) +#define DIX_HEADER_SIZE (DIX_EID_SIZE + DIX_LENGTH_SIZE) +#define MAX_EIDS (1 << (8 * DIX_EID_SIZE)) +#define ETH_MAX_SDU_SIZE (1500 - DIX_HEADER_SIZE) +#define ETH_FRAME_SIZE (ETH_HEADER_SIZE + DIX_HEADER_SIZE \ + + ETH_MAX_SDU_SIZE) #elif defined(BUILD_ETH_LLC) -#define THIS_TYPE IPCP_ETH_LLC -#define MGMT_SAP 0x01 -#define LLC_HEADER_SIZE 3 -#define MAX_SAPS 64 -#define ETH_MAX_SDU_SIZE (1500 - LLC_HEADER_SIZE) -#define ETH_FRAME_SIZE (ETH_HEADER_SIZE + LLC_HEADER_SIZE \ - + ETH_MAX_SDU_SIZE) -#endif -#define ALLOC_TIMEO 10 /* ms */ -#define NAME_QUERY_TIMEO 2000 /* ms */ -#define MGMT_TIMEO 100 /* ms */ - -#define FLOW_REQ 0 -#define FLOW_REPLY 1 -#define NAME_QUERY_REQ 2 -#define NAME_QUERY_REPLY 3 +#define THIS_TYPE IPCP_ETH_LLC +#define MGMT_SAP 0x01 +#define LLC_HEADER_SIZE 3 +#define MAX_SAPS 64 +#define ETH_MAX_SDU_SIZE (1500 - LLC_HEADER_SIZE) +#define ETH_FRAME_SIZE (ETH_HEADER_SIZE + LLC_HEADER_SIZE \ + + ETH_MAX_SDU_SIZE) +#endif +#define ALLOC_TIMEO 10 /* ms */ +#define NAME_QUERY_TIMEO 2000 /* ms */ +#define MGMT_TIMEO 100 /* ms */ + +#define FLOW_REQ 0 +#define FLOW_REPLY 1 +#define NAME_QUERY_REQ 2 +#define NAME_QUERY_REPLY 3 struct mgmt_msg { - uint8_t code; + uint8_t code; #if defined(BUILD_ETH_DIX) uint16_t seid; uint16_t deid; #elif defined(BUILD_ETH_LLC) - uint8_t ssap; - uint8_t dsap; + uint8_t ssap; + uint8_t dsap; #endif - uint8_t qoscube; - int8_t response; + uint8_t qoscube; + int8_t response; } __attribute__((packed)); struct eth_frame { - uint8_t dst_hwaddr[MAC_SIZE]; - uint8_t src_hwaddr[MAC_SIZE]; + uint8_t dst_hwaddr[MAC_SIZE]; + uint8_t src_hwaddr[MAC_SIZE]; #if defined(BUILD_ETH_DIX) - uint8_t ethertype[ETH_TYPE_LENGTH_SIZE]; - uint8_t eid[DIX_HEADER_SIZE]; + uint16_t ethertype; + uint16_t eid; + uint16_t length; #elif defined(BUILD_ETH_LLC) - uint8_t length[ETH_TYPE_LENGTH_SIZE]; - uint8_t dsap; - uint8_t ssap; - uint8_t cf; + uint16_t length; + uint8_t dsap; + uint8_t ssap; + uint8_t cf; #endif - uint8_t payload; + uint8_t payload; } __attribute__((packed)); struct ef { @@ -344,18 +347,14 @@ static int eth_ipcp_send_frame(const uint8_t * dst_addr, const uint8_t * payload, size_t len) { - uint32_t frame_len = 0; + uint32_t frame_len = 0; #ifdef BUILD_ETH_LLC - uint8_t cf = 0x03; - uint16_t length; + uint8_t cf = 0x03; #endif - uint8_t frame[ETH_MAX_SDU_SIZE]; - struct eth_frame * e_frame; + uint8_t frame[ETH_MAX_SDU_SIZE]; + struct eth_frame * e_frame; - if (payload == NULL) { - log_err("Payload was NULL."); - return -1; - } + assert(payload); if (len > ETH_MAX_SDU_SIZE) return -1; @@ -371,13 +370,12 @@ static int eth_ipcp_send_frame(const uint8_t * dst_addr, #endif /* HAVE_NETMAP */ MAC_SIZE); #if defined(BUILD_ETH_DIX) - memcpy(&e_frame->ethertype, ð_data.ethertype, ETH_TYPE_LENGTH_SIZE); - deid = htons(deid); - memcpy(&e_frame->eid, &deid, DIX_HEADER_SIZE); + e_frame->ethertype = eth_data.ethertype; + e_frame->eid = htons(deid); + e_frame->length = htons(len); frame_len = ETH_HEADER_SIZE + DIX_HEADER_SIZE + len; #elif defined(BUILD_ETH_LLC) - length = htons(LLC_HEADER_SIZE + len); - memcpy(&e_frame->length, &length, sizeof(length)); + e_frame->length = htons(LLC_HEADER_SIZE + len); e_frame->dsap = dsap; e_frame->ssap = ssap; e_frame->cf = cf; @@ -410,6 +408,7 @@ static int eth_ipcp_send_frame(const uint8_t * dst_addr, return -1; } #endif /* HAVE_NETMAP */ + return 0; } @@ -821,16 +820,12 @@ static void * eth_ipcp_sdu_reader(void * o) } #endif + length = ntohs(e_frame->length); #if defined(BUILD_ETH_DIX) - length = frame_len - ETH_HEADER_SIZE - DIX_HEADER_SIZE; - memcpy(&deid, &e_frame->eid, sizeof(deid)); - deid = ntohs(deid); + deid = ntohs(e_frame->eid); if (deid == MGMT_EID) { #elif defined (BUILD_ETH_LLC) - memcpy(&length, &e_frame->length, sizeof(length)); - length = ntohs(length); - if (length > 0x05FF) /* DIX */ continue; |