From a40db6d511712f53b6663e61786a9eb825589984 Mon Sep 17 00:00:00 2001 From: "oliver@schinagl.nl" Date: Fri, 25 Nov 2016 16:30:19 +0100 Subject: [PATCH] net: cosmetic: Do not use magic values for ARP_HLEN Commit 674bb249825a ("net: cosmetic: Replace magic numbers in arp.c with constants") introduced a nice define to replace the magic value 6 for the ethernet hardware address. Replace more hardcoded instances of 6 which really reference the ARP_HLEN (iow the MAC/Hardware/Ethernet address). Signed-off-by: Olliver Schinagl Acked-by: Joe Hershberger --- common/fdt_support.c | 2 +- include/net.h | 52 +++++++++++++++++++++++--------------------- net/eth-uclass.c | 10 ++++----- net/eth_legacy.c | 10 ++++----- 4 files changed, 38 insertions(+), 36 deletions(-) diff --git a/common/fdt_support.c b/common/fdt_support.c index c9f7019e38..f16039114a 100644 --- a/common/fdt_support.c +++ b/common/fdt_support.c @@ -473,7 +473,7 @@ void fdt_fixup_ethernet(void *fdt) char *tmp, *end; char mac[16]; const char *path; - unsigned char mac_addr[6]; + unsigned char mac_addr[ARP_HLEN]; int offset; if (fdt_path_offset(fdt, "/aliases") < 0) diff --git a/include/net.h b/include/net.h index 1f4d947350..61568f6b31 100644 --- a/include/net.h +++ b/include/net.h @@ -38,6 +38,9 @@ #define PKTALIGN ARCH_DMA_MINALIGN +/* ARP hardware address length */ +#define ARP_HLEN 6 + /* IPv4 addresses are always 32 bits in size */ struct in_addr { __be32 s_addr; @@ -90,7 +93,7 @@ enum eth_state_t { */ struct eth_pdata { phys_addr_t iobase; - unsigned char enetaddr[6]; + unsigned char enetaddr[ARP_HLEN]; int phy_interface; int max_speed; }; @@ -161,7 +164,7 @@ void eth_halt_state_only(void); /* Set passive state */ #ifndef CONFIG_DM_ETH struct eth_device { char name[16]; - unsigned char enetaddr[6]; + unsigned char enetaddr[ARP_HLEN]; phys_addr_t iobase; int state; @@ -300,9 +303,9 @@ u32 ether_crc(size_t len, unsigned char const *p); */ struct ethernet_hdr { - u8 et_dest[6]; /* Destination node */ - u8 et_src[6]; /* Source node */ - u16 et_protlen; /* Protocol or length */ + u8 et_dest[ARP_HLEN]; /* Destination node */ + u8 et_src[ARP_HLEN]; /* Source node */ + u16 et_protlen; /* Protocol or length */ }; /* Ethernet header size */ @@ -311,16 +314,16 @@ struct ethernet_hdr { #define ETH_FCS_LEN 4 /* Octets in the FCS */ struct e802_hdr { - u8 et_dest[6]; /* Destination node */ - u8 et_src[6]; /* Source node */ - u16 et_protlen; /* Protocol or length */ - u8 et_dsap; /* 802 DSAP */ - u8 et_ssap; /* 802 SSAP */ - u8 et_ctl; /* 802 control */ - u8 et_snap1; /* SNAP */ + u8 et_dest[ARP_HLEN]; /* Destination node */ + u8 et_src[ARP_HLEN]; /* Source node */ + u16 et_protlen; /* Protocol or length */ + u8 et_dsap; /* 802 DSAP */ + u8 et_ssap; /* 802 SSAP */ + u8 et_ctl; /* 802 control */ + u8 et_snap1; /* SNAP */ u8 et_snap2; u8 et_snap3; - u16 et_prot; /* 802 protocol */ + u16 et_prot; /* 802 protocol */ }; /* 802 + SNAP + ethernet header size */ @@ -330,11 +333,11 @@ struct e802_hdr { * Virtual LAN Ethernet header */ struct vlan_ethernet_hdr { - u8 vet_dest[6]; /* Destination node */ - u8 vet_src[6]; /* Source node */ - u16 vet_vlan_type; /* PROT_VLAN */ - u16 vet_tag; /* TAG of VLAN */ - u16 vet_type; /* protocol type */ + u8 vet_dest[ARP_HLEN]; /* Destination node */ + u8 vet_src[ARP_HLEN]; /* Source node */ + u16 vet_vlan_type; /* PROT_VLAN */ + u16 vet_tag; /* TAG of VLAN */ + u16 vet_type; /* protocol type */ }; /* VLAN Ethernet header size */ @@ -405,7 +408,6 @@ struct arp_hdr { # define ARP_ETHER 1 /* Ethernet hardware address */ u16 ar_pro; /* Format of protocol address */ u8 ar_hln; /* Length of hardware address */ -# define ARP_HLEN 6 u8 ar_pln; /* Length of protocol address */ # define ARP_PLEN 4 u16 ar_op; /* Operation */ @@ -514,16 +516,16 @@ extern char net_nis_domain[32]; /* Our IS domain */ extern char net_hostname[32]; /* Our hostname */ extern char net_root_path[64]; /* Our root path */ /** END OF BOOTP EXTENTIONS **/ -extern u8 net_ethaddr[6]; /* Our ethernet address */ -extern u8 net_server_ethaddr[6]; /* Boot server enet address */ +extern u8 net_ethaddr[ARP_HLEN]; /* Our ethernet address */ +extern u8 net_server_ethaddr[ARP_HLEN]; /* Boot server enet address */ extern struct in_addr net_ip; /* Our IP addr (0 = unknown) */ extern struct in_addr net_server_ip; /* Server IP addr (0 = unknown) */ extern uchar *net_tx_packet; /* THE transmit packet */ extern uchar *net_rx_packets[PKTBUFSRX]; /* Receive packets */ extern uchar *net_rx_packet; /* Current receive packet */ extern int net_rx_packet_len; /* Current rx packet length */ -extern const u8 net_bcast_ethaddr[6]; /* Ethernet broadcast address */ -extern const u8 net_null_ethaddr[6]; +extern const u8 net_bcast_ethaddr[ARP_HLEN]; /* Ethernet broadcast address */ +extern const u8 net_null_ethaddr[ARP_HLEN]; #define VLAN_NONE 4095 /* untagged */ #define VLAN_IDMASK 0x0fff /* mask of valid vlan id */ @@ -562,9 +564,9 @@ extern ushort cdp_appliance_vlan; /* CDP returned appliance VLAN */ */ static inline int is_cdp_packet(const uchar *ethaddr) { - extern const u8 net_cdp_ethaddr[6]; + extern const u8 net_cdp_ethaddr[ARP_HLEN]; - return memcmp(ethaddr, net_cdp_ethaddr, 6) == 0; + return memcmp(ethaddr, net_cdp_ethaddr, ARP_HLEN) == 0; } #endif diff --git a/net/eth-uclass.c b/net/eth-uclass.c index 1d13011089..140e47d52d 100644 --- a/net/eth-uclass.c +++ b/net/eth-uclass.c @@ -230,7 +230,7 @@ static int on_ethaddr(const char *name, const char *value, enum env_op op, eth_write_hwaddr(dev); break; case env_op_delete: - memset(pdata->enetaddr, 0, 6); + memset(pdata->enetaddr, 0, ARP_HLEN); } } @@ -458,7 +458,7 @@ static int eth_post_probe(struct udevice *dev) { struct eth_device_priv *priv = dev->uclass_priv; struct eth_pdata *pdata = dev->platdata; - unsigned char env_enetaddr[6]; + unsigned char env_enetaddr[ARP_HLEN]; #if defined(CONFIG_NEEDS_MANUAL_RELOC) struct eth_ops *ops = eth_get_ops(dev); @@ -497,7 +497,7 @@ static int eth_post_probe(struct udevice *dev) eth_getenv_enetaddr_by_index("eth", dev->seq, env_enetaddr); if (!is_zero_ethaddr(env_enetaddr)) { if (!is_zero_ethaddr(pdata->enetaddr) && - memcmp(pdata->enetaddr, env_enetaddr, 6)) { + memcmp(pdata->enetaddr, env_enetaddr, ARP_HLEN)) { printf("\nWarning: %s MAC addresses don't match:\n", dev->name); printf("Address in SROM is %pM\n", @@ -507,7 +507,7 @@ static int eth_post_probe(struct udevice *dev) } /* Override the ROM MAC address */ - memcpy(pdata->enetaddr, env_enetaddr, 6); + memcpy(pdata->enetaddr, env_enetaddr, ARP_HLEN); } else if (is_valid_ethaddr(pdata->enetaddr)) { eth_setenv_enetaddr_by_index("eth", dev->seq, pdata->enetaddr); printf("\nWarning: %s using MAC address from ROM\n", @@ -535,7 +535,7 @@ static int eth_pre_remove(struct udevice *dev) eth_get_ops(dev)->stop(dev); /* clear the MAC address */ - memset(pdata->enetaddr, 0, 6); + memset(pdata->enetaddr, 0, ARP_HLEN); return 0; } diff --git a/net/eth_legacy.c b/net/eth_legacy.c index 1354f49ec0..e4bd0f4c1a 100644 --- a/net/eth_legacy.c +++ b/net/eth_legacy.c @@ -121,7 +121,7 @@ static int on_ethaddr(const char *name, const char *value, enum env_op op, eth_write_hwaddr(dev, "eth", dev->index); break; case env_op_delete: - memset(dev->enetaddr, 0, 6); + memset(dev->enetaddr, 0, ARP_HLEN); } } dev = dev->next; @@ -134,14 +134,14 @@ U_BOOT_ENV_CALLBACK(ethaddr, on_ethaddr); int eth_write_hwaddr(struct eth_device *dev, const char *base_name, int eth_number) { - unsigned char env_enetaddr[6]; + unsigned char env_enetaddr[ARP_HLEN]; int ret = 0; eth_getenv_enetaddr_by_index(base_name, eth_number, env_enetaddr); if (!is_zero_ethaddr(env_enetaddr)) { if (!is_zero_ethaddr(dev->enetaddr) && - memcmp(dev->enetaddr, env_enetaddr, 6)) { + memcmp(dev->enetaddr, env_enetaddr, ARP_HLEN)) { printf("\nWarning: %s MAC addresses don't match:\n", dev->name); printf("Address in SROM is %pM\n", @@ -150,7 +150,7 @@ int eth_write_hwaddr(struct eth_device *dev, const char *base_name, env_enetaddr); } - memcpy(dev->enetaddr, env_enetaddr, 6); + memcpy(dev->enetaddr, env_enetaddr, ARP_HLEN); } else if (is_valid_ethaddr(dev->enetaddr)) { eth_setenv_enetaddr_by_index(base_name, eth_number, dev->enetaddr); @@ -299,7 +299,7 @@ int eth_initialize(void) */ int eth_mcast_join(struct in_addr mcast_ip, int join) { - u8 mcast_mac[6]; + u8 mcast_mac[ARP_HLEN]; if (!eth_current || !eth_current->mcast) return -1; mcast_mac[5] = htonl(mcast_ip.s_addr) & 0xff;