If uint64_t would be used for mac, a set of functions would be needed to operate on it (e.g. copy it into a packet header, or check the bcast bit). Then a odp_eth_mac_t type would be better choice to the public API (instead of helpers).
-Petri From: [email protected] [mailto:[email protected]] On Behalf Of ext Ola Liljedahl Sent: Thursday, September 04, 2014 4:01 PM To: Bala Manoharan; [email protected] Subject: Re: [lng-odp] [PATCH v3 1/1] API support for querying mac address I think the prototype should include the size of the buffer as well. Other types of network interfaces use 64-bit MAC addresses. The cost of looking forward is negligible. /** * Get MAC address of the interface * * @param hdl ODP packet IO handle * @param mac_addr Storage for MAC address of the packet IO interface (filled by function) * @param buf_size Size of mac_addr buffer. * @return Number of bytes written on success or -1 on error **/ int odp_pktio_get_mac_addr(odp_pktio_t hdl, unsigned char *mac_addr, size_t buf_size); On 4 September 2014 14:51, Bala Manoharan <[email protected]<mailto:[email protected]>> wrote: FYI ---------- Forwarded message ---------- From: Balasubramanian Manoharan <[email protected]<mailto:[email protected]>> Date: 20 August 2014 15:50 Subject: [lng-odp] [PATCH v3 1/1] API support for querying mac address To: [email protected]<mailto:[email protected]> Cc: Balasubramanian Manoharan <[email protected]<mailto:[email protected]>> This patch provides API support for querying mac address of an interface using odp_pktio_t handle. This current patch incorporates the review comments from the previous patch. The discussions are ongoing regarding adding additional API for querying mac address using device name, once it gets finalized the same will be provided as a different patch. Signed-off-by: Balasubramanian Manoharan <[email protected]<mailto:[email protected]>> --- include/odp_packet_io.h | 8 ++++++ platform/linux-generic/include/odp_packet_netmap.h | 1 + platform/linux-generic/odp_packet_io.c | 29 +++++++++++++++++++++- platform/linux-generic/odp_packet_netmap.c | 3 ++- platform/linux-generic/odp_packet_socket.c | 19 +++++++------- 5 files changed, 49 insertions(+), 11 deletions(-) diff --git a/include/odp_packet_io.h b/include/odp_packet_io.h index cfefac0..86778bf 100644 --- a/include/odp_packet_io.h +++ b/include/odp_packet_io.h @@ -129,6 +129,14 @@ void odp_pktio_set_input(odp_packet_t pkt, odp_pktio_t id); */ odp_pktio_t odp_pktio_get_input(odp_packet_t pkt); +/** + * Get mac address of the interface + * + * @param id ODP packet IO handle + * @param mac_addr Storage for Mac address of the packet IO interface (filled by function) + * @return 0 on success or -1 on error +**/ +int odp_pktio_get_mac_addr(odp_pktio_t id, unsigned char *mac_addr); #ifdef __cplusplus } #endif diff --git a/platform/linux-generic/include/odp_packet_netmap.h b/platform/linux-generic/include/odp_packet_netmap.h index 57d9f2c..69174fe 100644 --- a/platform/linux-generic/include/odp_packet_netmap.h +++ b/platform/linux-generic/include/odp_packet_netmap.h @@ -40,6 +40,7 @@ typedef struct { odp_queue_t tx_access; /* Used for exclusive access to send packets */ uint32_t if_flags; char ifname[32]; + unsigned char if_mac[ETH_ALEN]; } pkt_netmap_t; /** diff --git a/platform/linux-generic/odp_packet_io.c b/platform/linux-generic/odp_packet_io.c index 33ade10..ddad7a4 100644 --- a/platform/linux-generic/odp_packet_io.c +++ b/platform/linux-generic/odp_packet_io.c @@ -245,7 +245,7 @@ odp_pktio_t odp_pktio_open(const char *dev, odp_buffer_pool_t pool, ODP_ERR("This type of I/O is not supported. Please recompile.\n"); break; } - + pktio_entry->s.params.type = params->type; unlock_entry(pktio_entry); return id; } @@ -535,3 +535,30 @@ int pktin_deq_multi(queue_entry_t *qentry, odp_buffer_hdr_t *buf_hdr[], int num) return nbr; } +int odp_pktio_get_mac_addr(odp_pktio_t pkt, unsigned char *mac_addr) +{ + pktio_entry_t *pktio_entry = get_entry(pkt); + if (!pktio_entry) { + ODP_ERR("Invalid odp_pktio_t value\n"); + return -1; + } + switch (pktio_entry->s.params.type) { + case ODP_PKTIO_TYPE_SOCKET_BASIC: + case ODP_PKTIO_TYPE_SOCKET_MMSG: + memcpy(mac_addr, pktio_entry->s.pkt_sock.if_mac, ETH_ALEN); + break; + case ODP_PKTIO_TYPE_SOCKET_MMAP: + memcpy(mac_addr, pktio_entry->s.pkt_sock_mmap.if_mac, ETH_ALEN); + break; +#ifdef ODP_HAVE_NETMAP + case ODP_PKTIO_TYPE_NETMAP: + memcpy(mac_addr, pktio_entry->s.pkt_nm.if_mac, ETH_ALEN); + break; +#endif + default: + ODP_ERR("Invalid pktio type: %02x\n", + pktio_entry->s.params.type); + return ODP_PKTIO_INVALID; + } + return 0; +} diff --git a/platform/linux-generic/odp_packet_netmap.c b/platform/linux-generic/odp_packet_netmap.c index e2215ab..13f3f52 100644 --- a/platform/linux-generic/odp_packet_netmap.c +++ b/platform/linux-generic/odp_packet_netmap.c @@ -222,9 +222,10 @@ int setup_pkt_netmap(pkt_netmap_t * const pkt_nm, const char *netdev, ODP_ERR("Error: token creation failed\n"); return -1; } + if (socket_store_hw_addr(pkt_nm->if_mac, netdev) + return -1; odp_queue_enq(pkt_nm->tx_access, token); - ODP_DBG("Wait for link to come up\n"); sleep(WAITLINK_TMO); ODP_DBG("Done\n"); diff --git a/platform/linux-generic/odp_packet_socket.c b/platform/linux-generic/odp_packet_socket.c index d44c333..593d093 100644 --- a/platform/linux-generic/odp_packet_socket.c +++ b/platform/linux-generic/odp_packet_socket.c @@ -57,6 +57,8 @@ typedef struct { static raw_socket_t raw_sockets[MAX_RAW_SOCKETS_NETDEVS]; static odp_spinlock_t raw_sockets_lock; +static int socket_store_hw_addr(int sockfd, unsigned char *if_mac, + const char *netdev); /** Eth buffer start offset from u32-aligned address to make sure the following * header (e.g. IP) starts at a 32-bit aligned address. @@ -153,7 +155,6 @@ int setup_pkt_sock(pkt_sock_t * const pkt_sock, const char *netdev, if (pool == ODP_BUFFER_POOL_INVALID) return -1; pkt_sock->pool = pool; - pkt = odp_packet_alloc(pool); if (!odp_packet_is_valid(pkt)) return -1; @@ -168,12 +169,14 @@ int setup_pkt_sock(pkt_sock_t * const pkt_sock, const char *netdev, pkt_sock->max_frame_len = pkt_sock->buf_size - pkt_sock->frame_offset; odp_packet_free(pkt); - odp_spinlock_lock(&raw_sockets_lock); - sockfd = find_raw_fd(netdev); if (sockfd) { pkt_sock->sockfd = sockfd; + if (socket_store_hw_addr(sockfd, pkt_sock->if_mac, netdev)) { + perror("setup_pkt_sock() - socket_store_hw_addr()"); + goto error; + } odp_spinlock_unlock(&raw_sockets_lock); return sockfd; } @@ -215,7 +218,6 @@ int setup_pkt_sock(pkt_sock_t * const pkt_sock, const char *netdev, perror("setup_pkt_sock() - bind(to IF)"); goto error; } - add_raw_fd(netdev, sockfd); odp_spinlock_unlock(&raw_sockets_lock); return sockfd; @@ -735,7 +737,7 @@ static int mmap_bind_sock(pkt_sock_mmap_t *pkt_sock, const char *netdev) return 0; } -static int mmap_store_hw_addr(pkt_sock_mmap_t * const pkt_sock, +static int socket_store_hw_addr(int sockfd, unsigned char *if_mac, const char *netdev) { struct ifreq ethreq; @@ -744,13 +746,13 @@ static int mmap_store_hw_addr(pkt_sock_mmap_t * const pkt_sock, /* get MAC address */ memset(ðreq, 0, sizeof(ethreq)); strncpy(ethreq.ifr_name, netdev, IFNAMSIZ); - ret = ioctl(pkt_sock->sockfd, SIOCGIFHWADDR, ðreq); + ret = ioctl(sockfd, SIOCGIFHWADDR, ðreq); if (ret != 0) { perror("store_hw_addr() - ioctl(SIOCGIFHWADDR)"); return -1; } - ethaddr_copy(pkt_sock->if_mac, + ethaddr_copy(if_mac, (unsigned char *)ethreq.ifr_ifru.ifru_hwaddr.sa_data); return 0; @@ -805,8 +807,7 @@ int setup_pkt_sock_mmap(pkt_sock_mmap_t * const pkt_sock, const char *netdev, if (ret != 0) return -1; - ret = mmap_store_hw_addr(pkt_sock, netdev); - if (ret != 0) + if (socket_store_hw_addr(pkt_sock->sockfd, pkt_sock->if_mac, netdev)) return -1; if_idx = if_nametoindex(netdev); -- 2.0.1.472.g6f92e5f
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