igzip: add zlib header init function

Add isal_zlib_hdr_init() function to initialize
the isal_zlib_header structure to all 0.

Signed-off-by: Pablo de Lara <[email protected]>

Author: pablodelara

igzip/igzip.c

@@ -1023,6 +1023,14 @@ void isal_gzip_header_init(struct isal_gzip_header *gz_hdr)
 	gz_hdr->flags = 0;
 }
 
+void isal_zlib_header_init(struct isal_zlib_header *z_hdr)
+{
+	z_hdr->info = 0;
+	z_hdr->level = 0;
+	z_hdr->dict_id = 0;
+	z_hdr->dict_flag = 0;
+}
+
 uint32_t isal_write_gzip_header(struct isal_zstream *stream, struct isal_gzip_header *gz_hdr)
 {
 	uint32_t flags = 0, hcrc, hdr_size = GZIP_HDR_BASE;

igzip/igzip_inflate.c

@@ -2195,12 +2195,15 @@ int isal_inflate_stateless(struct inflate_state *state)
 
 	if (state->crc_flag == IGZIP_GZIP) {
 		struct isal_gzip_header gz_hdr;
+
 		isal_gzip_header_init(&gz_hdr);
 		ret = isal_read_gzip_header(state, &gz_hdr);
 		if (ret)
 			return ret;
 	} else if (state->crc_flag == IGZIP_ZLIB) {
-		struct isal_zlib_header z_hdr = { 0 };
+		struct isal_zlib_header z_hdr;
+
+		isal_zlib_header_init(&z_hdr);
 		ret = isal_read_zlib_header(state, &z_hdr);
 		if (ret)
 			return ret;
@@ -2268,14 +2271,17 @@ int isal_inflate(struct inflate_state *state)
 
 	if (!state->wrapper_flag && state->crc_flag == IGZIP_GZIP) {
 		struct isal_gzip_header gz_hdr;
+
 		isal_gzip_header_init(&gz_hdr);
 		ret = isal_read_gzip_header(state, &gz_hdr);
 		if (ret < 0)
 			return ret;
 		else if (ret > 0)
 			return ISAL_DECOMP_OK;
 	} else if (!state->wrapper_flag && state->crc_flag == IGZIP_ZLIB) {
-		struct isal_zlib_header z_hdr = { 0 };
+		struct isal_zlib_header z_hdr;
+
+		isal_zlib_header_init(&z_hdr);
 		ret = isal_read_zlib_header(state, &z_hdr);
 		if (ret < 0)
 			return ret;

igzip/igzip_wrapper_hdr_test.c

@@ -856,7 +856,7 @@ int main(int argc, char *argv[])
 
 	printf("zlib wrapper test: ");
 	for (i = 0; i < RANDOMS; i++) {
-		memset(&z_hdr_orig, 0, sizeof(z_hdr_orig));
+		isal_zlib_header_init(&z_hdr_orig);
 
 		gen_rand_zlib_header(&z_hdr_orig);
 

include/igzip_lib.h

@@ -604,6 +604,13 @@ void isal_deflate_reset(struct isal_zstream *stream);
  */
 void isal_gzip_header_init(struct isal_gzip_header *gz_hdr);
 
+/**
+ * @brief Set zlib header default values
+ *
+ * @param z_hdr: zlib header to initialize.
+ */
+void isal_zlib_header_init(struct isal_zlib_header *z_hdr);
+
 /**
  * @brief Write gzip header to output stream
  *

isa-l.def

@@ -121,3 +121,4 @@ crc64_rocksoft_refl_base        @116
 crc64_rocksoft_norm             @117
 crc64_rocksoft_refl             @118
 ec_init_tables_base             @119
+isal_zlib_header_init           @120