[tnguy-next-queue:dev-queue 235/256] drivers/net/ethernet/intel/ice/ice_txrx.c:1971:16: error: redeclaration of 'protocol' with no linkage
From: kernel test robot
Date: Wed Apr 13 2022 - 12:36:36 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git dev-queue
head: faadd15618a12d7b11208f11c54d6ac0f2776486
commit: 5d4c82c60dd05a844ff582c2c6d4e8c3c3020ebc [235/256] ice: Add mpls+tso support
config: powerpc-buildonly-randconfig-r003-20220413 (https://download.01.org/0day-ci/archive/20220414/202204140015.MRcE3hbT-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git/commit/?id=5d4c82c60dd05a844ff582c2c6d4e8c3c3020ebc
git remote add tnguy-next-queue https://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue.git
git fetch --no-tags tnguy-next-queue dev-queue
git checkout 5d4c82c60dd05a844ff582c2c6d4e8c3c3020ebc
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/net/ethernet/intel/ice/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All errors (new ones prefixed by >>):
drivers/net/ethernet/intel/ice/ice_txrx.c: In function 'ice_tso':
>> drivers/net/ethernet/intel/ice/ice_txrx.c:1971:16: error: redeclaration of 'protocol' with no linkage
1971 | __be16 protocol;
| ^~~~~~~~
drivers/net/ethernet/intel/ice/ice_txrx.c:1967:16: note: previous declaration of 'protocol' with type '__be16' {aka 'short unsigned int'}
1967 | __be16 protocol;
| ^~~~~~~~
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for HOTPLUG_CPU
Depends on SMP && (PPC_PSERIES || PPC_PMAC || PPC_POWERNV || FSL_SOC_BOOKE
Selected by
- PM_SLEEP_SMP && SMP && (ARCH_SUSPEND_POSSIBLE || ARCH_HIBERNATION_POSSIBLE && PM_SLEEP
vim +/protocol +1971 drivers/net/ethernet/intel/ice/ice_txrx.c
1944
1945 /**
1946 * ice_tso - computes mss and TSO length to prepare for TSO
1947 * @first: pointer to struct ice_tx_buf
1948 * @off: pointer to struct that holds offload parameters
1949 *
1950 * Returns 0 or error (negative) if TSO can't happen, 1 otherwise.
1951 */
1952 static
1953 int ice_tso(struct ice_tx_buf *first, struct ice_tx_offload_params *off)
1954 {
1955 struct sk_buff *skb = first->skb;
1956 union {
1957 struct iphdr *v4;
1958 struct ipv6hdr *v6;
1959 unsigned char *hdr;
1960 } ip;
1961 union {
1962 struct tcphdr *tcp;
1963 struct udphdr *udp;
1964 unsigned char *hdr;
1965 } l4;
1966 u64 cd_mss, cd_tso_len;
1967 __be16 protocol;
1968 u32 paylen;
1969 u8 l4_start;
1970 int err;
> 1971 __be16 protocol;
1972
1973 if (skb->ip_summed != CHECKSUM_PARTIAL)
1974 return 0;
1975
1976 if (!skb_is_gso(skb))
1977 return 0;
1978
1979 err = skb_cow_head(skb, 0);
1980 if (err < 0)
1981 return err;
1982
1983 /* cppcheck-suppress unreadVariable */
1984 protocol = vlan_get_protocol(skb);
1985
1986 if (eth_p_mpls(protocol))
1987 ip.hdr = skb_inner_network_header(skb);
1988 else
1989 ip.hdr = skb_network_header(skb);
1990 l4.hdr = skb_checksum_start(skb);
1991
1992 /* initialize outer IP header fields */
1993 if (ip.v4->version == 4) {
1994 ip.v4->tot_len = 0;
1995 ip.v4->check = 0;
1996 } else {
1997 ip.v6->payload_len = 0;
1998 }
1999
2000 if (skb_shinfo(skb)->gso_type & (SKB_GSO_GRE |
2001 SKB_GSO_GRE_CSUM |
2002 SKB_GSO_IPXIP4 |
2003 SKB_GSO_IPXIP6 |
2004 SKB_GSO_UDP_TUNNEL |
2005 SKB_GSO_UDP_TUNNEL_CSUM)) {
2006 if (!(skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) &&
2007 (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL_CSUM)) {
2008 l4.udp->len = 0;
2009
2010 /* determine offset of outer transport header */
2011 l4_start = (u8)(l4.hdr - skb->data);
2012
2013 /* remove payload length from outer checksum */
2014 paylen = skb->len - l4_start;
2015 csum_replace_by_diff(&l4.udp->check,
2016 (__force __wsum)htonl(paylen));
2017 }
2018
2019 /* reset pointers to inner headers */
2020
2021 /* cppcheck-suppress unreadVariable */
2022 ip.hdr = skb_inner_network_header(skb);
2023 l4.hdr = skb_inner_transport_header(skb);
2024
2025 /* initialize inner IP header fields */
2026 if (ip.v4->version == 4) {
2027 ip.v4->tot_len = 0;
2028 ip.v4->check = 0;
2029 } else {
2030 ip.v6->payload_len = 0;
2031 }
2032 }
2033
2034 /* determine offset of transport header */
2035 l4_start = (u8)(l4.hdr - skb->data);
2036
2037 /* remove payload length from checksum */
2038 paylen = skb->len - l4_start;
2039
2040 if (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) {
2041 csum_replace_by_diff(&l4.udp->check,
2042 (__force __wsum)htonl(paylen));
2043 /* compute length of UDP segmentation header */
2044 off->header_len = (u8)sizeof(l4.udp) + l4_start;
2045 } else {
2046 csum_replace_by_diff(&l4.tcp->check,
2047 (__force __wsum)htonl(paylen));
2048 /* compute length of TCP segmentation header */
2049 off->header_len = (u8)((l4.tcp->doff * 4) + l4_start);
2050 }
2051
2052 /* update gso_segs and bytecount */
2053 first->gso_segs = skb_shinfo(skb)->gso_segs;
2054 first->bytecount += (first->gso_segs - 1) * off->header_len;
2055
2056 cd_tso_len = skb->len - off->header_len;
2057 cd_mss = skb_shinfo(skb)->gso_size;
2058
2059 /* record cdesc_qw1 with TSO parameters */
2060 off->cd_qw1 |= (u64)(ICE_TX_DESC_DTYPE_CTX |
2061 (ICE_TX_CTX_DESC_TSO << ICE_TXD_CTX_QW1_CMD_S) |
2062 (cd_tso_len << ICE_TXD_CTX_QW1_TSO_LEN_S) |
2063 (cd_mss << ICE_TXD_CTX_QW1_MSS_S));
2064 first->tx_flags |= ICE_TX_FLAGS_TSO;
2065 return 1;
2066 }
2067
--
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