infiniband/core/packer.c

54  * @desc:Array of structure field descriptions
55  * @desc_len:Number of entries in @desc
60  * controlled by the array of fields in @desc.
62 void ib_pack(const struct ib_field        *desc,
70 		if (desc[i].size_bits <= 32) {
76 			shift = 32 - desc[i].offset_bits - desc[i].size_bits;
77 			if (desc[i].struct_size_bytes)
78 				val = value_read(desc[i].struct_offset_bytes,
79 						 desc[i].struct_size_bytes,
84 			mask = cpu_to_be32(((1ull << desc[i].size_bits) - 1) << shift);
85 			addr = (__be32 *) buf + desc[i].offset_words;
87 		} else if (desc[i].size_bits <= 64) {
93 			shift = 64 - desc[i].offset_bits - desc[i].size_bits;
94 			if (desc[i].struct_size_bytes)
95 				val = value_read(desc[i].struct_offset_bytes,
96 						 desc[i].struct_size_bytes,
101 			mask = cpu_to_be64((~0ull >> (64 - desc[i].size_bits)) << shift);
102 			addr = (__be64 *) ((__be32 *) buf + desc[i].offset_words);
105 			if (desc[i].offset_bits % 8 ||
106 			    desc[i].size_bits   % 8) {
108 					desc[i].field_name, desc[i].size_bits);
111 			if (desc[i].struct_size_bytes)
112 				memcpy(buf + desc[i].offset_words * 4 +
113 				       desc[i].offset_bits / 8,
114 				       structure + desc[i].struct_offset_bytes,
115 				       desc[i].size_bits / 8);
117 				memset(buf + desc[i].offset_words * 4 +
118 				       desc[i].offset_bits / 8,
120 				       desc[i].size_bits / 8);
140  * @desc:Array of structure field descriptions
141  * @desc_len:Number of entries in @desc
146  * controlled by the array of fields in @desc.
148 void ib_unpack(const struct ib_field        *desc,
156 		if (!desc[i].struct_size_bytes)
159 		if (desc[i].size_bits <= 32) {
165 			shift = 32 - desc[i].offset_bits - desc[i].size_bits;
166 			mask = ((1ull << desc[i].size_bits) - 1) << shift;
167 			addr = (__be32 *) buf + desc[i].offset_words;
169 			value_write(desc[i].struct_offset_bytes,
170 				    desc[i].struct_size_bytes,
173 		} else if (desc[i].size_bits <= 64) {
179 			shift = 64 - desc[i].offset_bits - desc[i].size_bits;
180 			mask = (~0ull >> (64 - desc[i].size_bits)) << shift;
181 			addr = (__be64 *) buf + desc[i].offset_words;
183 			value_write(desc[i].struct_offset_bytes,
184 				    desc[i].struct_size_bytes,
188 			if (desc[i].offset_bits % 8 ||
189 			    desc[i].size_bits   % 8) {
191 					desc[i].field_name, desc[i].size_bits);
194 			memcpy(structure + desc[i].struct_offset_bytes,
195 			       buf + desc[i].offset_words * 4 +
196 			       desc[i].offset_bits / 8,
197 			       desc[i].size_bits / 8);