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Message-ID: <201905250819.rXBikZsC%lkp@intel.com>
Date: Sat, 25 May 2019 08:08:23 +0800
From: kbuild test robot <lkp@...el.com>
To: Jose Abreu <Jose.Abreu@...opsys.com>
Cc: kbuild-all@...org, netdev@...r.kernel.org
Subject: [net-next:master 86/94]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:127:26: sparse:
sparse: incorrect type in assignment (different base types)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
head: 22942498ccebf13b076859f8746be161dc0c6d89
commit: 091810dbded96c2af81f645e386e4262553e3493 [86/94] net: stmmac: Introduce selftests support
reproduce:
# apt-get install sparse
# sparse version: v0.6.1-rc1-7-g2b96cd8-dirty
git checkout 091810dbded96c2af81f645e386e4262553e3493
make ARCH=x86_64 allmodconfig
make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__'
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:127:26: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
>> drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:127:26: sparse: expected unsigned short [usertype]
>> drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:127:26: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:128:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:128:24: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:128:24: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:129:24: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:129:24: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:129:24: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:131:34: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:131:34: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:131:34: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:132:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:132:32: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:132:32: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:133:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:133:32: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:133:32: sparse: got restricted __be16 [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:134:32: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short [usertype] @@ got resunsigned short [usertype] @@
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:134:32: sparse: expected unsigned short [usertype]
drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c:134:32: sparse: got restricted __be16 [usertype]
vim +127 drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c
49
50 static struct sk_buff *stmmac_test_get_udp_skb(struct stmmac_priv *priv,
51 struct stmmac_packet_attrs *attr)
52 {
53 struct sk_buff *skb = NULL;
54 struct udphdr *uhdr = NULL;
55 struct tcphdr *thdr = NULL;
56 struct stmmachdr *shdr;
57 struct ethhdr *ehdr;
58 struct iphdr *ihdr;
59 int iplen, size;
60
61 size = attr->size + STMMAC_TEST_PKT_SIZE;
62 if (attr->vlan) {
63 size += 4;
64 if (attr->vlan > 1)
65 size += 4;
66 }
67
68 if (attr->tcp)
69 size += sizeof(struct tcphdr);
70 else
71 size += sizeof(struct udphdr);
72
73 skb = netdev_alloc_skb(priv->dev, size);
74 if (!skb)
75 return NULL;
76
77 prefetchw(skb->data);
78 skb_reserve(skb, NET_IP_ALIGN);
79
80 if (attr->vlan > 1)
81 ehdr = skb_push(skb, ETH_HLEN + 8);
82 else if (attr->vlan)
83 ehdr = skb_push(skb, ETH_HLEN + 4);
84 else if (attr->remove_sa)
85 ehdr = skb_push(skb, ETH_HLEN - 6);
86 else
87 ehdr = skb_push(skb, ETH_HLEN);
88 skb_reset_mac_header(skb);
89
90 skb_set_network_header(skb, skb->len);
91 ihdr = skb_put(skb, sizeof(*ihdr));
92
93 skb_set_transport_header(skb, skb->len);
94 if (attr->tcp)
95 thdr = skb_put(skb, sizeof(*thdr));
96 else
97 uhdr = skb_put(skb, sizeof(*uhdr));
98
99 if (!attr->remove_sa)
100 eth_zero_addr(ehdr->h_source);
101 eth_zero_addr(ehdr->h_dest);
102 if (attr->src && !attr->remove_sa)
103 ether_addr_copy(ehdr->h_source, attr->src);
104 if (attr->dst)
105 ether_addr_copy(ehdr->h_dest, attr->dst);
106
107 if (!attr->remove_sa) {
108 ehdr->h_proto = htons(ETH_P_IP);
109 } else {
110 __be16 *ptr = (__be16 *)ehdr;
111
112 /* HACK */
113 ptr[3] = htons(ETH_P_IP);
114 }
115
116 if (attr->vlan) {
117 u16 *tag, *proto;
118
119 if (!attr->remove_sa) {
120 tag = (void *)ehdr + ETH_HLEN;
121 proto = (void *)ehdr + (2 * ETH_ALEN);
122 } else {
123 tag = (void *)ehdr + ETH_HLEN - 6;
124 proto = (void *)ehdr + ETH_ALEN;
125 }
126
> 127 proto[0] = htons(ETH_P_8021Q);
128 tag[0] = htons(attr->vlan_id_out);
129 tag[1] = htons(ETH_P_IP);
130 if (attr->vlan > 1) {
131 proto[0] = htons(ETH_P_8021AD);
132 tag[1] = htons(ETH_P_8021Q);
133 tag[2] = htons(attr->vlan_id_in);
134 tag[3] = htons(ETH_P_IP);
135 }
136 }
137
138 if (attr->tcp) {
139 thdr->source = htons(attr->sport);
140 thdr->dest = htons(attr->dport);
141 thdr->doff = sizeof(struct tcphdr) / 4;
142 thdr->check = 0;
143 } else {
144 uhdr->source = htons(attr->sport);
145 uhdr->dest = htons(attr->dport);
146 uhdr->len = htons(sizeof(*shdr) + sizeof(*uhdr) + attr->size);
147 uhdr->check = 0;
148 }
149
150 ihdr->ihl = 5;
151 ihdr->ttl = 32;
152 ihdr->version = 4;
153 if (attr->tcp)
154 ihdr->protocol = IPPROTO_TCP;
155 else
156 ihdr->protocol = IPPROTO_UDP;
157 iplen = sizeof(*ihdr) + sizeof(*shdr) + attr->size;
158 if (attr->tcp)
159 iplen += sizeof(*thdr);
160 else
161 iplen += sizeof(*uhdr);
162 ihdr->tot_len = htons(iplen);
163 ihdr->frag_off = 0;
164 ihdr->saddr = 0;
165 ihdr->daddr = htonl(attr->ip_dst);
166 ihdr->tos = 0;
167 ihdr->id = 0;
168 ip_send_check(ihdr);
169
170 shdr = skb_put(skb, sizeof(*shdr));
171 shdr->version = 0;
172 shdr->magic = cpu_to_be64(STMMAC_TEST_PKT_MAGIC);
173 attr->id = stmmac_test_next_id;
174 shdr->id = stmmac_test_next_id++;
175
176 if (attr->size)
177 skb_put(skb, attr->size);
178
179 skb->csum = 0;
180 skb->ip_summed = CHECKSUM_PARTIAL;
181 if (attr->tcp) {
182 thdr->check = ~tcp_v4_check(skb->len, ihdr->saddr, ihdr->daddr, 0);
183 skb->csum_start = skb_transport_header(skb) - skb->head;
184 skb->csum_offset = offsetof(struct tcphdr, check);
185 } else {
186 udp4_hwcsum(skb, ihdr->saddr, ihdr->daddr);
187 }
188
189 skb->protocol = htons(ETH_P_IP);
190 skb->pkt_type = PACKET_HOST;
191 skb->dev = priv->dev;
192
193 return skb;
194 }
195
---
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