pldm-file: Use static CRC32. Update crc crate

Signed-off-by: Matt Johnston <[email protected]>

Author: mkj

Cargo.lock

@@ -11,7 +11,7 @@ repository = "https://github.com/CodeConstruct/mctp-rs"
 anyhow = "1.0.80"
 argh = "0.1.12"
 chrono = { version = "0.4", default-features = false }
-crc = "3.0"
+crc = "3.3"
 defmt = "0.3"
 deku = { git = "https://github.com/CodeConstruct/deku.git", tag = "cc/deku-v0.19.1/no-alloc-3", default-features = false }
 embedded-io-adapters = { version = "0.6", features = ["std", "futures-03"] }

Cargo.toml

@@ -80,6 +80,9 @@ impl std::fmt::Display for PldmFileError {
     }
 }
 
+const CRC32: crc::Crc<u32, crc::Table<16>> =
+    crc::Crc::<u32, crc::Table<16>>::new(&crc::CRC_32_ISO_HDLC);
+
 type Result<T> = std::result::Result<T, PldmFileError>;
 
 impl<const N: usize> Responder<N> {
@@ -402,8 +405,8 @@ impl<const N: usize> Responder<N> {
         let data = &mut resp_data[l..];
         host.read(data, xfer_ctx.start + offset)
             .map_err(|_| CCode::ERROR)?;
-        let crc32 = crc::Crc::<u32>::new(&crc::CRC_32_ISO_HDLC);
-        let cs = crc32.checksum(data);
+
+        let cs = CRC32.checksum(data);
         resp_data.extend_from_slice(&cs.to_le_bytes());
 
         xfer_ctx.offset = offset;