#include #include #include #include #ifndef _HAVE_ARCH_IPV6_CSUM __sum16 csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr, __u32 len, __u8 proto, __wsum csum) { int carry; __u32 ulen; __u32 uproto; __u32 sum = (__force u32)csum; sum += (__force u32)saddr->s6_addr32[0]; carry = (sum < (__force u32)saddr->s6_addr32[0]); sum += carry; sum += (__force u32)saddr->s6_addr32[1]; carry = (sum < (__force u32)saddr->s6_addr32[1]); sum += carry; sum += (__force u32)saddr->s6_addr32[2]; carry = (sum < (__force u32)saddr->s6_addr32[2]); sum += carry; sum += (__force u32)saddr->s6_addr32[3]; carry = (sum < (__force u32)saddr->s6_addr32[3]); sum += carry; sum += (__force u32)daddr->s6_addr32[0]; carry = (sum < (__force u32)daddr->s6_addr32[0]); sum += carry; sum += (__force u32)daddr->s6_addr32[1]; carry = (sum < (__force u32)daddr->s6_addr32[1]); sum += carry; sum += (__force u32)daddr->s6_addr32[2]; carry = (sum < (__force u32)daddr->s6_addr32[2]); sum += carry; sum += (__force u32)daddr->s6_addr32[3]; carry = (sum < (__force u32)daddr->s6_addr32[3]); sum += carry; ulen = (__force u32)htonl((__u32) len); sum += ulen; carry = (sum < ulen); sum += carry; uproto = (__force u32)htonl(proto); sum += uproto; carry = (sum < uproto); sum += carry; return csum_fold((__force __wsum)sum); } EXPORT_SYMBOL(csum_ipv6_magic); #endif int udp6_csum_init(struct sk_buff *skb, struct udphdr *uh, int proto) { int err; UDP_SKB_CB(skb)->partial_cov = 0; UDP_SKB_CB(skb)->cscov = skb->len; if (proto == IPPROTO_UDPLITE) { err = udplite_checksum_init(skb, uh); if (err) return err; } /* To support RFC 6936 (allow zero checksum in UDP/IPV6 for tunnels) * we accept a checksum of zero here. When we find the socket * for the UDP packet we'll check if that socket allows zero checksum * for IPv6 (set by socket option). * * Note, we are only interested in != 0 or == 0, thus the * force to int. */ return (__force int)skb_checksum_init_zero_check(skb, proto, uh->check, ip6_compute_pseudo); } EXPORT_SYMBOL(udp6_csum_init); /* Function to set UDP checksum for an IPv6 UDP packet. This is intended * for the simple case like when setting the checksum for a UDP tunnel. */ void udp6_set_csum(bool nocheck, struct sk_buff *skb, const struct in6_addr *saddr, const struct in6_addr *daddr, int len) { struct udphdr *uh = udp_hdr(skb); if (nocheck) uh->check = 0; else if (skb_is_gso(skb)) uh->check = ~udp_v6_check(len, saddr, daddr, 0); else if (skb->ip_summed == CHECKSUM_PARTIAL) { uh->check = 0; uh->check = udp_v6_check(len, saddr, daddr, lco_csum(skb)); if (uh->check == 0) uh->check = CSUM_MANGLED_0; } else { skb->ip_summed = CHECKSUM_PARTIAL; skb->csum_start = skb_transport_header(skb) - skb->head; skb->csum_offset = offsetof(struct udphdr, check); uh->check = ~udp_v6_check(len, saddr, daddr, 0); } } EXPORT_SYMBOL(udp6_set_csum); ommit/net?h=nds-private-remove&id=85b037442e3f0e84296ab1010fd6b057eee18496'>net/rds/loop.h
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authorCharles Keepax <ckeepax@opensource.wolfsonmicro.com>2016-11-10 10:45:18 +0000
committerMark Brown <broonie@kernel.org>2016-11-10 17:28:32 +0000
commit85b037442e3f0e84296ab1010fd6b057eee18496 (patch)
treeb745f3f22cbd45af2039a004eb3f21d530afdc8b /net/rds/loop.h
parent1001354ca34179f3db924eb66672442a173147dc (diff)
regulators: helpers: Fix handling of bypass_val_on in get_bypass_regmap
The handling of bypass_val_on that was added in regulator_get_bypass_regmap is done unconditionally however several drivers don't define a value for bypass_val_on. This results in those drivers reporting bypass being enabled when it is not. In regulator_set_bypass_regmap we use bypass_mask if bypass_val_on is zero. This patch adds similar handling in regulator_get_bypass_regmap. Fixes: commit dd1a571daee7 ("regulator: helpers: Ensure bypass register field matches ON value") Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'net/rds/loop.h')